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IPv6 Node Requirements Update: Enhancing Protocol Standards

This document outlines specific requirements and changes for IPv6 nodes, including support for MIPv6, Path MTU Discovery, and considerations for IPv4 support. It also addresses topics like MIBs and Mobile IP functionality.

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IPv6 Node Requirements Update: Enhancing Protocol Standards

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  1. IETF 55 IPv6 Working Group IPv6 Node Requirements draft-ietf-ipv6-node-requirements-02.txt John Loughney

  2. Major Changes • Some formatting stuff. • Requirements language. • Removal of many ‘IP over x’ documents. • Many of the MIPv6 requirements.

  3. Requirement Language • MUST ... • (always mandatory) • MUST ... when X • (mandatory under condition X) • SHOULD ... • (always highly recommended) • SHOULD ... when X • (highly recommended when X, possible otherwise) • MAY ... • (possible if you want to do it) • However, we should discuss if this is a Standards Track or Informational document.

  4. RFC 1981 - Path MTU Discovery … • Path MTU is MAY. Some folks have commented that it needs to be SHOULD / MUST. • Comment: • ’We really shouldn't be encouraging the idea that it's an option except in very restricted circumstances.’

  5. RFC 3041 - Privacy Extensions …. • Do we want to discuss in what circumstances Privacy Extensions for Stateless Address Autoconfiguration in IPv6 are needed? • hosts • servers • mobile nodes • other

  6. MLD • Multicast Listener Discovery [RFC-2710] MUST be supported by nodes supporting multicast applications. A primary IPv6 multicast application is Neighbor Discovery (all those solicited-node mcast addresses must be joined). • When MLDv2 [MLDv2] has been completed, it SHOULD take precedence over MLD.

  7. IPv4 Support • IPv6 nodes MAY support IPv4. However, this document should consider the following cases: • Native IPv6 only • Native IPv6 with IPv4 supported only via tunneling over IPv6 • Native IPv6 and native IPv4 both fully supported. • Need to sort out if this places any requirements on this.

  8. MIP • Mobile Node functionality MAY be supported. • Route Optimization functionality SHOULD be supported for hosts. • Route Optimization is not required for routers.

  9. MIBs • What do we want to do here?

  10. Other • Remove section on RFC2874 - DNS Extensions to Support IPv6 Address Aggregation and Renumbering

  11. Discussions to Capture (at some point) • Flow Label • DNS discovery • SeND WG issues • ANYCAST

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